Carbureter.



H. J. CORDLE.

CARBURETER.

APPLICATION FILED MAR. I6. 1916.

Patented Nov. 21, 1916.

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' TED STATES A HAMNER J. CORDLE, OF LITTLET ON, NORTH CAROLINA.

CARBURETER.

Application filed March 16, 1916. Serial No. 84,619.

To all whom it may concern Be it known that I, HAMNER J. column, a citizen of the United States, residing at Littl'eton, in the county of Halifax and State of North Carolina, have invented certain new and useful Improvements in Carbureters, of which the following is a specification.

My invention relates toimprovements in carburetors, for use inconnection with internal combustion engines, having one or more'cylinders.

An important object of the invention is to provide a carburetor of the above mentioned character, formed of few and simple parts and adapted to effect an intimate mixture between the air and liquid fuel.

A further object of the invention is to provide means for automatically increasing the supply of carbureted air to the engine, as the suction therefrom increases, due to the increased speed of the engine.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a central vertical longitudinal sectional view through a carbureter embodying the invention, and, Fig. 2 is a horizontal sectional view taken on line 22 of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown a preferred e1nb0diment of my invention, the numeral 5 designates a casing or chamber, which is preferably circular in horizontal cross-section, and constitutes the body portion of the carbureter. Formed upon one side of the casing 5 is a liquid fuel circulating pipe 6, one end of which may be connected with a pump (not shown) and the other end of which may be connected with a tank or other receptacle holding the liquid fuel, and from which the pump withdraws the same. It is thus apparent that the pipe 6 is included in a liquid fuel circulating system. Having communication with the pipe 6 is a depending pipe 7 having a lower horizontal por tion 8 projecting into the casing 5, adjacent its bottom, as shown. Formed upon the opposite side of the casing 5 is an air supply pipe 9, communicating with the atmosphere,

. and having a valve 10 arranged therein, as

shown. The casing 5 is preferably provided with an annular interior horizontal flange 11.

The horizontal portion 8 of the pipe 7 1s. provided at its inner end with a screwthreaded opening 12, receiving the exteriorly screw-threaded end of a valve casing 13. This lower end of the valve casing 13 is formed solid, as shown at 14, and above this solid portion is the longitudinal bore 15 or opening of the valve casing. Formed through the solid portion let is port 16, having tapered ends 17 and 18. The passage of the liquid fuel through the port 16 may be controlled by a needle-valve 19, having its tapered end projecting into a tapered portion 17, and having screw-threaded engagement with the bottom of the casing 5, as shown at 20, and projecting outwardly beyond the same, as shown.

The valve casing 13 is normally more or less vertically arranged and is provided at its upper end with a more or less horizontal tray 21, having radially disposed grooves 22, form-ed upon its upper surface. Adapted to be arranged upon and contact with the upper surface of the-tray 21 is a more or less horizontal cap 23, having a needle-valve 24L rigidly connected therewith and depending therefrom. This needle-valve extends longitudinally within the valve casing 13 and its tapered end is adapted to enter the portion 18 of the port 16, to cover and uncover the same. The numeral 25 designates a guide ring, rigidly mounted upon the needle-valve 2d, and adapted. to contact with a stop element 26, to positively limit the upward movement of the needle-valve. The ring 25 is provided with apertures 27, to permit of the free passage of the liquid fuel through the valve casing 13. Depending from the cap 23 and rigidly connected therewith is a guide sleeve 28, operating within the upper end of the valve casing 13, thus retaining the needle-valve in its proper position. The guide sleeve 28 is provided near its upper end with a horizontal set of openings or apertures 29, which are covered when the cap 23 is in the lower position but have registration with the grooves 22 (when the cap is moved to the uppermost position.

The upper end of the casing 5 is provided with an outlet conduit 30, having connection with a coupling 31, adapted to be secured .to a pipe connected with the manifold pipes of the engine. A valve 32 is arranged within the coupling 31, as shown.

Mounted to reciprocate within the conduit is a tubular air supply valve 33, provided an interior annular flange 36, as shown.

When the tubular valve 33 is in the lowermost position there is an air passage between it and the cap 23. The upward movement of the tubular valve is opposed by a spring 37 as shown.

In the operation of the apparatus, the pipe 7 is maintained filled with the liquid fuel, such as gasolene, by the same being continuously circulated in the pipe 6. The needle valve 19 may be adjusted to regulate the permanent passage of the liquid fuel through the port 16. The cap 23 and valve 24: are gravity operated, and automatically return to the lowermost position, the valve 24 then covering or closing the port 16. Upon the down stroke of the piston in each cylinder of the engine, the vacuum created therein is transmitted to the casing 5, and elevates the cap 23 and needle 2%. This movement of the cap 23 brings the apertures 29 into registration with the grooves 22, whereby the gasolene will pass outwardly through these grooves and be sprayed or discharged into the incoming air, being drawn through the casing 5. In this manner the air is thoroughly carbureted before passing to the cylinders of the engine. When the speed of the engine increases, the suction is correspondingly increased in the casing 5. This increased suction serves to move the tubular valve 33 upwardly, in opposition to the spring 37, whereby the passage between the valve 36 and cap 23 is increased. By this means additional air will be drawn into the casing 5, carbureted, and carried to the cylinders.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described the invention, I claim: 1

1. In a carbureter of the character described, a casing having a liquid fuel supply device and an air supply device, a substantially vertical valve casing arranged within the said casing and having its lower end provided with a port in communication with the interior of the liquid fuel supply device, a tray carried by the upper end of the valve casing and having groovesvextending to the interior thereof, a cap arranged near and above the tray, a needle-valve depending from the cap to be moved thereby and adapted to cover and uncover the port, a sleeve attached to the cap and depending therefrom into the valve casing and having apertures adapted to be moved into and out of registration with the grooves, and an outlet device for the casing arranged near and above the cap. I

2. In a carbureter of the character described, a casing having a liquid fuel supply conduit leading into the lower end thereof, a substantially vertical valve casing connected with the conduit and having its lower end provided with a port in communication with the conduit, a manually operated valve to cover and uncover the lower end of the port, a tray carried by the upper end of the valve casing and having grooves extending to the interior thereof, a cap arranged near and above the tray, a needle-valve connected with the cap and depending therefrom and adapted to cover and uncover the upper end of the port, a sleeve connected with the cap and depending therefrom into the valve casing and having apertures adapted to be moved into and out of registration with the grooves, an outlet conduit connected with the casing near and above the cap, a suction operated air control valve mounted in the outlet conduit, and a spring to oppose the opening movement of the suction operated. valve.

In testimony whereof I affix-my signature.

HAMNER J. CORDLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

